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Graphite-protected CsPbBr3 perovskite photoanodes functionalised with water oxidation catalyst for oxygen evolution in water / Trystan, Watson; Jenny, Baker

Nature Communications, Volume: 10, Issue: 1

Swansesa University Authors: Trystan, Watson, Jenny, Baker

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Abstract

Metal-halide perovskites have been widely investigated in the photovoltaic sector due to their promising optoelectronic properties and inexpensive fabrication techniques based on solution processing. Here we report the development of inorganic CsPbBr3-based photoanodes for direct photoelectrochemica...

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Published in: Nature Communications
ISSN: 2041-1723
Published: 2019
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URI: https://cronfa.swan.ac.uk/Record/cronfa50291
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first_indexed 2019-05-09T20:01:27Z
last_indexed 2019-07-18T15:37:39Z
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spelling 2019-07-18T14:17:20.9744647 v2 50291 2019-05-09 Graphite-protected CsPbBr3 perovskite photoanodes functionalised with water oxidation catalyst for oxygen evolution in water a210327b52472cfe8df9b8108d661457 0000-0002-8015-1436 Trystan Watson Trystan Watson true false 6913b56f36f0c8cd34d8c9040d2df460 0000-0003-3530-1957 Jenny Baker Jenny Baker true false 2019-05-09 EEN Metal-halide perovskites have been widely investigated in the photovoltaic sector due to their promising optoelectronic properties and inexpensive fabrication techniques based on solution processing. Here we report the development of inorganic CsPbBr3-based photoanodes for direct photoelectrochemical oxygen evolution from aqueous electrolytes. We use a commercial thermal graphite sheet and a mesoporous carbon scaffold to encapsulate CsPbBr3 as an inexpensive and efficient protection strategy. We achieve a record stability of 30 h in aqueous electrolyte under constant simulated solar illumination, with currents above 2 mA cm−2 at 1.23 VRHE. We further demonstrate the versatility of our approach by grafting a molecular Ir-based water oxidation catalyst on the electrolyte-facing surface of the sealing graphite sheet, which cathodically shifts the onset potential of the composite photoanode due to accelerated charge transfer. These results suggest an efficient route to develop stable halide perovskite based electrodes for photoelectrochemical solar fuel generation. Journal Article Nature Communications 10 1 2041-1723 31 12 2019 2019-12-31 10.1038/s41467-019-10124-0 COLLEGE NANME Engineering COLLEGE CODE EEN Swansea University 2019-07-18T14:17:20.9744647 2019-05-09T10:34:27.8101854 Isabella Poli 1 Ulrich Hintermair 2 Miriam Regue 3 Santosh Kumar 4 Emma V. Sackville 5 Jenny Baker 0000-0003-3530-1957 6 Trystan Watson 0000-0002-8015-1436 7 Salvador Eslava 8 Petra J. Cameron 9 0050291-09052019103659.pdf poli2019.pdf 2019-05-09T10:36:59.4930000 Output 5385063 application/pdf Version of Record true 2019-05-09T00:00:00.0000000 Distributed under the terms of a Creative Commons Attribution (CC-BY-4.0) true eng
title Graphite-protected CsPbBr3 perovskite photoanodes functionalised with water oxidation catalyst for oxygen evolution in water
spellingShingle Graphite-protected CsPbBr3 perovskite photoanodes functionalised with water oxidation catalyst for oxygen evolution in water
Trystan, Watson
Jenny, Baker
title_short Graphite-protected CsPbBr3 perovskite photoanodes functionalised with water oxidation catalyst for oxygen evolution in water
title_full Graphite-protected CsPbBr3 perovskite photoanodes functionalised with water oxidation catalyst for oxygen evolution in water
title_fullStr Graphite-protected CsPbBr3 perovskite photoanodes functionalised with water oxidation catalyst for oxygen evolution in water
title_full_unstemmed Graphite-protected CsPbBr3 perovskite photoanodes functionalised with water oxidation catalyst for oxygen evolution in water
title_sort Graphite-protected CsPbBr3 perovskite photoanodes functionalised with water oxidation catalyst for oxygen evolution in water
author_id_str_mv a210327b52472cfe8df9b8108d661457
6913b56f36f0c8cd34d8c9040d2df460
author_id_fullname_str_mv a210327b52472cfe8df9b8108d661457_***_Trystan, Watson
6913b56f36f0c8cd34d8c9040d2df460_***_Jenny, Baker
author Trystan, Watson
Jenny, Baker
format Journal article
container_title Nature Communications
container_volume 10
container_issue 1
publishDate 2019
institution Swansea University
issn 2041-1723
doi_str_mv 10.1038/s41467-019-10124-0
document_store_str 1
active_str 0
description Metal-halide perovskites have been widely investigated in the photovoltaic sector due to their promising optoelectronic properties and inexpensive fabrication techniques based on solution processing. Here we report the development of inorganic CsPbBr3-based photoanodes for direct photoelectrochemical oxygen evolution from aqueous electrolytes. We use a commercial thermal graphite sheet and a mesoporous carbon scaffold to encapsulate CsPbBr3 as an inexpensive and efficient protection strategy. We achieve a record stability of 30 h in aqueous electrolyte under constant simulated solar illumination, with currents above 2 mA cm−2 at 1.23 VRHE. We further demonstrate the versatility of our approach by grafting a molecular Ir-based water oxidation catalyst on the electrolyte-facing surface of the sealing graphite sheet, which cathodically shifts the onset potential of the composite photoanode due to accelerated charge transfer. These results suggest an efficient route to develop stable halide perovskite based electrodes for photoelectrochemical solar fuel generation.
published_date 2019-12-31T04:04:30Z
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